Socket for Left Rear Interior Lamp Peugeot 406 Combi 6350H6

Description

Socket for left rear inner lamp in tailgate for PEUGEOT 406 COMBI. Supplied with a piece of wiring; bulbs are recommended to be replaced.

This replacement bulb socket is designed for the left inner lamp mounted in the tailgate of the Peugeot 406 Combi. It includes a short section of wiring to simplify installation and restore a reliable electrical connection to the rear lamp cluster. Ideal for professional mechanics and competent DIY enthusiasts, the part is commonly searched for by its product code and is an effective repair for corroded or damaged bulb holders that cause intermittent or non-functioning tail lights.

Technical Information

• Manufacturer: Stellantis / Citroén / Peugeot
• Model: Peugeot 406 Combi
• Product Codes: 6350H6, 6350H6 NFP
• Other Numbers: —

Function And Typical Faults

The socket secures the bulb and provides the electrical contact between the bulb pins and the vehicle wiring. Common failure modes include corrosion of the metal contacts, heat-induced deformation or cracking of the plastic body, and water ingress from a damaged tailgate seal. Faults usually present as one or more rear lights flickering, intermittent operation, or complete loss of that lamp circuit.

Expected Lifespan

Service life depends on environment and use; sockets in seawater or salted-road regions tend to fail sooner. Typical longevity is several years, but damage from moisture or overheating can shorten that considerably.

How To Replace

1. Disconnect the vehicle battery before starting work to avoid short circuits.
2. Open the tailgate and remove the interior trim panel to access the lamp housing.
3. Remove the lamp cluster or access the bulb holder from behind, depending on the vehicle trim.
4. Unplug the existing socket from the wiring harness and cut or unclip any retaining clips as required.
5. Fit the new socket, connect the supplied wiring piece to the vehicle loom (use correct crimps or solder and heatshrink for a reliable joint).
6. Install new bulbs when refitting the socket; test the lamp functions (stop, tail, indicator) before reassembling trim.
7. Reassemble the trim and reconnect the battery.

Installation Recommendations

• Always Replace Bulbs When Replacing The Socket: Old bulbs can mask contact issues and shorten the life of a new socket.
• Use Corrosion Protection: Apply a light dielectric grease to metal contacts to reduce corrosion and improve conductivity.
• Ensure Proper Sealing: Check and renew any tailgate seals or grommets to prevent water ingress that causes socket failure.
• Secure Wiring: Fasten the wiring to avoid chafing against the tailgate structure.
• Test Before Final Assembly: Verify all lamp functions after installation to avoid repeated disassembly.

Most Common Reason For Failure

The predominant cause of failure is moisture-induced corrosion of the contact surfaces and plastic degradation from heat cycles. Water penetration into the tailgate lamp area and poor sealing accelerates contact corrosion and electrical resistance, leading to intermittent or lost lamp function.

This socket is a practical, cost-effective repair for Peugeot 406 Combi rear lamp faults and will restore reliable operation when installed following recommended procedures.